2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2014 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
16 * All rights reserved.
18 /* This notice applies to changes, created by or for Novell, Inc.,
19 * to preexisting works for which notices appear elsewhere in this file.
21 * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
23 * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
24 * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
25 * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
26 * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
27 * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
28 * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
29 * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
30 * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
32 * Modification to OpenLDAP source by Novell, Inc.
33 * April 2000 sfs Added code to chase V3 referrals
34 * request.c - sending of ldap requests; handling of referrals
36 * Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
37 * can be found in the file "build/LICENSE-2.0.1" in this distribution
38 * of OpenLDAP Software.
45 #include <ac/stdlib.h>
48 #include <ac/socket.h>
49 #include <ac/string.h>
51 #include <ac/unistd.h>
56 /* used by ldap_send_server_request and ldap_new_connection */
58 #define LDAP_CONN_LOCK_IF(nolock) \
59 { if (nolock) LDAP_MUTEX_LOCK( &ld->ld_conn_mutex ); }
60 #define LDAP_CONN_UNLOCK_IF(nolock) \
61 { if (nolock) LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex ); }
62 #define LDAP_REQ_LOCK_IF(nolock) \
63 { if (nolock) LDAP_MUTEX_LOCK( &ld->ld_req_mutex ); }
64 #define LDAP_REQ_UNLOCK_IF(nolock) \
65 { if (nolock) LDAP_MUTEX_UNLOCK( &ld->ld_req_mutex ); }
66 #define LDAP_RES_LOCK_IF(nolock) \
67 { if (nolock) LDAP_MUTEX_LOCK( &ld->ld_res_mutex ); }
68 #define LDAP_RES_UNLOCK_IF(nolock) \
69 { if (nolock) LDAP_MUTEX_UNLOCK( &ld->ld_res_mutex ); }
71 #define LDAP_CONN_LOCK_IF(nolock)
72 #define LDAP_CONN_UNLOCK_IF(nolock)
73 #define LDAP_REQ_LOCK_IF(nolock)
74 #define LDAP_REQ_UNLOCK_IF(nolock)
75 #define LDAP_RES_LOCK_IF(nolock)
76 #define LDAP_RES_UNLOCK_IF(nolock)
79 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPURLDesc *srv, int any ));
80 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
81 static void ldap_free_request_int LDAP_P(( LDAP *ld, LDAPRequest *lr ));
84 re_encode_request( LDAP *ld,
92 ldap_alloc_ber_with_options( LDAP *ld )
96 ber = ber_alloc_t( ld->ld_lberoptions );
98 ld->ld_errno = LDAP_NO_MEMORY;
106 ldap_set_ber_options( LDAP *ld, BerElement *ber )
108 /* ld_lberoptions is constant, hence no lock */
109 ber->ber_options = ld->ld_lberoptions;
113 /* sets needed mutexes - no mutexes set to this point */
115 ldap_send_initial_request(
123 ber_socket_t sd = AC_SOCKET_INVALID;
125 Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
127 LDAP_MUTEX_LOCK( &ld->ld_conn_mutex );
128 if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd ) == -1 ) {
129 /* not connected yet */
130 rc = ldap_open_defconn( ld );
133 if ( ld->ld_defconn && ld->ld_defconn->lconn_status == LDAP_CONNST_CONNECTING )
134 rc = ldap_int_check_async_open( ld, sd );
137 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
139 } else if ( rc == 0 ) {
140 Debug( LDAP_DEBUG_TRACE,
141 "ldap_open_defconn: successful\n",
145 #ifdef LDAP_CONNECTIONLESS
146 if (LDAP_IS_UDP(ld)) {
147 if (msgtype == LDAP_REQ_BIND) {
148 LDAP_MUTEX_LOCK( &ld->ld_options.ldo_mutex );
149 if (ld->ld_options.ldo_cldapdn)
150 ldap_memfree(ld->ld_options.ldo_cldapdn);
151 ld->ld_options.ldo_cldapdn = ldap_strdup(dn);
153 LDAP_MUTEX_UNLOCK( &ld->ld_options.ldo_mutex );
154 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
157 if (msgtype != LDAP_REQ_ABANDON && msgtype != LDAP_REQ_SEARCH)
160 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
161 return LDAP_PARAM_ERROR;
165 LDAP_MUTEX_LOCK( &ld->ld_req_mutex );
166 rc = ldap_send_server_request( ld, ber, msgid, NULL,
167 NULL, NULL, NULL, 0, 0 );
168 LDAP_MUTEX_UNLOCK( &ld->ld_req_mutex );
169 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
174 /* protected by conn_mutex */
176 ldap_int_flush_request(
180 LDAPConn *lc = lr->lr_conn;
182 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_conn_mutex );
183 if ( ber_flush2( lc->lconn_sb, lr->lr_ber, LBER_FLUSH_FREE_NEVER ) != 0 ) {
184 if ( sock_errno() == EAGAIN ) {
185 /* need to continue write later */
186 lr->lr_status = LDAP_REQST_WRITING;
187 ldap_mark_select_write( ld, lc->lconn_sb );
188 ld->ld_errno = LDAP_BUSY;
191 ld->ld_errno = LDAP_SERVER_DOWN;
192 ldap_free_request( ld, lr );
193 ldap_free_connection( ld, lc, 0, 0 );
197 if ( lr->lr_parent == NULL ) {
198 lr->lr_ber->ber_end = lr->lr_ber->ber_ptr;
199 lr->lr_ber->ber_ptr = lr->lr_ber->ber_buf;
201 lr->lr_status = LDAP_REQST_INPROGRESS;
203 /* sent -- waiting for a response */
204 ldap_mark_select_read( ld, lc->lconn_sb );
205 ldap_clear_select_write( ld, lc->lconn_sb );
211 * protected by req_mutex
212 * if m_noconn then protect using conn_lock
213 * else already protected with conn_lock
214 * if m_res then also protected by res_mutex
218 ldap_send_server_request(
222 LDAPRequest *parentreq,
223 LDAPURLDesc **srvlist,
232 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_req_mutex );
233 Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
236 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
238 LDAP_CONN_LOCK_IF(m_noconn);
240 if ( srvlist == NULL ) {
243 lc = find_connection( ld, *srvlist, 1 );
245 if ( (bind != NULL) && (parentreq != NULL) ) {
246 /* Remember the bind in the parent */
248 ++parentreq->lr_outrefcnt;
250 lc = ldap_new_connection( ld, srvlist, 0,
256 /* async connect... */
257 if ( lc != NULL && lc->lconn_status == LDAP_CONNST_CONNECTING ) {
258 ber_socket_t sd = AC_SOCKET_ERROR;
259 struct timeval tv = { 0 };
261 ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_GET_FD, &sd );
264 switch ( ldap_int_poll( ld, sd, &tv, 1 ) ) {
267 lc->lconn_status = LDAP_CONNST_CONNECTED;
271 /* async only occurs if a network timeout is set */
273 /* honor network timeout */
274 LDAP_MUTEX_LOCK( &ld->ld_options.ldo_mutex );
275 if ( time( NULL ) - lc->lconn_created <= ld->ld_options.ldo_tm_net.tv_sec )
277 /* caller will have to call again */
278 ld->ld_errno = LDAP_X_CONNECTING;
280 LDAP_MUTEX_UNLOCK( &ld->ld_options.ldo_mutex );
289 if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
290 if ( ld->ld_errno == LDAP_SUCCESS ) {
291 ld->ld_errno = LDAP_SERVER_DOWN;
296 /* Forget about the bind */
297 --parentreq->lr_outrefcnt;
299 LDAP_CONN_UNLOCK_IF(m_noconn);
303 use_connection( ld, lc );
305 #ifdef LDAP_CONNECTIONLESS
306 if ( LDAP_IS_UDP( ld )) {
307 BerElement tmpber = *ber;
308 ber_rewind( &tmpber );
309 LDAP_MUTEX_LOCK( &ld->ld_options.ldo_mutex );
310 rc = ber_write( &tmpber, ld->ld_options.ldo_peer,
311 sizeof( struct sockaddr_storage ), 0 );
312 LDAP_MUTEX_UNLOCK( &ld->ld_options.ldo_mutex );
314 ld->ld_errno = LDAP_ENCODING_ERROR;
315 LDAP_CONN_UNLOCK_IF(m_noconn);
321 /* If we still have an incomplete write, try to finish it before
322 * dealing with the new request. If we don't finish here, return
323 * LDAP_BUSY and let the caller retry later. We only allow a single
324 * request to be in WRITING state.
327 if ( ld->ld_requests &&
328 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
329 ldap_int_flush_request( ld, ld->ld_requests ) < 0 )
334 LDAP_CONN_UNLOCK_IF(m_noconn);
338 lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ) );
340 ld->ld_errno = LDAP_NO_MEMORY;
341 ldap_free_connection( ld, lc, 0, 0 );
344 /* Forget about the bind */
345 --parentreq->lr_outrefcnt;
347 LDAP_CONN_UNLOCK_IF(m_noconn);
350 lr->lr_msgid = msgid;
351 lr->lr_status = LDAP_REQST_INPROGRESS;
352 lr->lr_res_errno = LDAP_SUCCESS; /* optimistic */
355 if ( parentreq != NULL ) { /* sub-request */
357 /* Increment if we didn't do it before the bind */
358 ++parentreq->lr_outrefcnt;
360 lr->lr_origid = parentreq->lr_origid;
361 lr->lr_parentcnt = ++parentreq->lr_parentcnt;
362 lr->lr_parent = parentreq;
363 lr->lr_refnext = parentreq->lr_child;
364 parentreq->lr_child = lr;
365 } else { /* original request */
366 lr->lr_origid = lr->lr_msgid;
369 /* Extract requestDN for future reference */
370 #ifdef LDAP_CONNECTIONLESS
371 if ( !LDAP_IS_UDP(ld) )
374 BerElement tmpber = *ber;
378 ber_reset( &tmpber, 1 );
379 rtag = ber_scanf( &tmpber, "{it", /*}*/ &bint, &tag );
382 rtag = ber_scanf( &tmpber, "{i" /*}*/, &bint );
384 case LDAP_REQ_DELETE:
387 rtag = ber_scanf( &tmpber, "{" /*}*/ );
388 case LDAP_REQ_ABANDON:
391 if ( tag != LDAP_REQ_ABANDON ) {
392 ber_skip_tag( &tmpber, &lr->lr_dn.bv_len );
393 lr->lr_dn.bv_val = tmpber.ber_ptr;
398 lr->lr_next = ld->ld_requests;
399 if ( lr->lr_next != NULL ) {
400 lr->lr_next->lr_prev = lr;
402 ld->ld_requests = lr;
404 ld->ld_errno = LDAP_SUCCESS;
405 if ( ldap_int_flush_request( ld, lr ) == -1 ) {
409 LDAP_CONN_UNLOCK_IF(m_noconn);
413 /* return 0 if no StartTLS ext, 1 if present, 2 if critical */
415 find_tls_ext( LDAPURLDesc *srv )
420 if ( !srv->lud_exts )
423 for (i=0; srv->lud_exts[i]; i++) {
425 ext = srv->lud_exts[i];
426 if ( ext[0] == '!') {
430 if ( !strcasecmp( ext, "StartTLS" ) ||
431 !strcasecmp( ext, "X-StartTLS" ) ||
432 !strcmp( ext, LDAP_EXOP_START_TLS )) {
440 * always protected by conn_mutex
441 * optionally protected by req_mutex and res_mutex
444 ldap_new_connection( LDAP *ld, LDAPURLDesc **srvlist, int use_ldsb,
445 int connect, LDAPreqinfo *bind, int m_req, int m_res )
450 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_conn_mutex );
451 Debug( LDAP_DEBUG_TRACE, "ldap_new_connection %d %d %d\n",
452 use_ldsb, connect, (bind != NULL) );
454 * make a new LDAP server connection
455 * XXX open connection synchronously for now
457 lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ) );
459 ld->ld_errno = LDAP_NO_MEMORY;
464 assert( ld->ld_sb != NULL );
465 lc->lconn_sb = ld->ld_sb;
468 lc->lconn_sb = ber_sockbuf_alloc();
469 if ( lc->lconn_sb == NULL ) {
470 LDAP_FREE( (char *)lc );
471 ld->ld_errno = LDAP_NO_MEMORY;
477 LDAPURLDesc **srvp, *srv = NULL;
479 async = LDAP_BOOL_GET( &ld->ld_options, LDAP_BOOL_CONNECT_ASYNC );
481 for ( srvp = srvlist; *srvp != NULL; srvp = &(*srvp)->lud_next ) {
484 rc = ldap_int_open_connection( ld, lc, *srvp, async );
488 if ( ld->ld_urllist_proc && ( !async || rc != -2 ) ) {
489 ld->ld_urllist_proc( ld, srvlist, srvp, ld->ld_urllist_params );
498 ber_sockbuf_free( lc->lconn_sb );
500 LDAP_FREE( (char *)lc );
501 ld->ld_errno = LDAP_SERVER_DOWN;
505 lc->lconn_server = ldap_url_dup( srv );
508 lc->lconn_status = async ? LDAP_CONNST_CONNECTING : LDAP_CONNST_CONNECTED;
509 lc->lconn_next = ld->ld_conns;
514 if ( lc->lconn_server->lud_exts ) {
515 int rc, ext = find_tls_ext( lc->lconn_server );
517 LDAPConn *savedefconn;
519 savedefconn = ld->ld_defconn;
520 ++lc->lconn_refcnt; /* avoid premature free */
523 LDAP_REQ_UNLOCK_IF(m_req);
524 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
525 LDAP_RES_UNLOCK_IF(m_res);
526 rc = ldap_start_tls_s( ld, NULL, NULL );
527 LDAP_RES_LOCK_IF(m_res);
528 LDAP_MUTEX_LOCK( &ld->ld_conn_mutex );
529 LDAP_REQ_LOCK_IF(m_req);
530 ld->ld_defconn = savedefconn;
533 if ( rc != LDAP_SUCCESS && ext == 2 ) {
534 ldap_free_connection( ld, lc, 1, 0 );
542 if ( bind != NULL ) {
544 LDAPConn *savedefconn;
546 /* Set flag to prevent additional referrals
547 * from being processed on this
548 * connection until the bind has completed
550 lc->lconn_rebind_inprogress = 1;
551 /* V3 rebind function */
552 if ( ld->ld_rebind_proc != NULL) {
553 LDAPURLDesc *srvfunc;
555 srvfunc = ldap_url_dup( *srvlist );
556 if ( srvfunc == NULL ) {
557 ld->ld_errno = LDAP_NO_MEMORY;
560 savedefconn = ld->ld_defconn;
561 ++lc->lconn_refcnt; /* avoid premature free */
564 Debug( LDAP_DEBUG_TRACE, "Call application rebind_proc\n", 0, 0, 0);
565 LDAP_REQ_UNLOCK_IF(m_req);
566 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
567 LDAP_RES_UNLOCK_IF(m_res);
568 err = (*ld->ld_rebind_proc)( ld,
569 bind->ri_url, bind->ri_request, bind->ri_msgid,
570 ld->ld_rebind_params );
571 LDAP_RES_LOCK_IF(m_res);
572 LDAP_MUTEX_LOCK( &ld->ld_conn_mutex );
573 LDAP_REQ_LOCK_IF(m_req);
575 ld->ld_defconn = savedefconn;
580 ldap_free_connection( ld, lc, 1, 0 );
583 ldap_free_urldesc( srvfunc );
588 struct berval passwd = BER_BVNULL;
590 savedefconn = ld->ld_defconn;
591 ++lc->lconn_refcnt; /* avoid premature free */
594 Debug( LDAP_DEBUG_TRACE,
595 "anonymous rebind via ldap_sasl_bind(\"\")\n",
598 LDAP_REQ_UNLOCK_IF(m_req);
599 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
600 LDAP_RES_UNLOCK_IF(m_res);
601 rc = ldap_sasl_bind( ld, "", LDAP_SASL_SIMPLE, &passwd,
602 NULL, NULL, &msgid );
603 if ( rc != LDAP_SUCCESS ) {
607 for ( err = 1; err > 0; ) {
608 struct timeval tv = { 0, 100000 };
609 LDAPMessage *res = NULL;
611 switch ( ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res ) ) {
617 #ifdef LDAP_R_COMPILE
618 ldap_pvt_thread_yield();
623 rc = ldap_parse_result( ld, res, &err, NULL, NULL, NULL, NULL, 1 );
624 if ( rc != LDAP_SUCCESS ) {
627 } else if ( err != LDAP_SUCCESS ) {
630 /* else err == LDAP_SUCCESS == 0 */
634 Debug( LDAP_DEBUG_TRACE,
635 "ldap_new_connection %p: "
636 "unexpected response %d "
637 "from BIND request id=%d\n",
638 (void *) ld, ldap_msgtype( res ), msgid );
644 LDAP_RES_LOCK_IF(m_res);
645 LDAP_MUTEX_LOCK( &ld->ld_conn_mutex );
646 LDAP_REQ_LOCK_IF(m_req);
647 ld->ld_defconn = savedefconn;
651 ldap_free_connection( ld, lc, 1, 0 );
656 lc->lconn_rebind_inprogress = 0;
662 /* protected by ld_conn_mutex */
664 find_connection( LDAP *ld, LDAPURLDesc *srv, int any )
666 * return an existing connection (if any) to the server srv
667 * if "any" is non-zero, check for any server in the "srv" chain
671 LDAPURLDesc *lcu, *lsu;
672 int lcu_port, lsu_port;
675 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_conn_mutex );
676 for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
677 lcu = lc->lconn_server;
678 lcu_port = ldap_pvt_url_scheme_port( lcu->lud_scheme,
681 for ( lsu = srv; lsu != NULL; lsu = lsu->lud_next ) {
682 lsu_port = ldap_pvt_url_scheme_port( lsu->lud_scheme,
685 if ( lsu_port == lcu_port
686 && strcmp( lcu->lud_scheme, lsu->lud_scheme ) == 0
687 && lcu->lud_host != NULL && lsu->lud_host != NULL
688 && strcasecmp( lsu->lud_host, lcu->lud_host ) == 0 )
704 /* protected by ld_conn_mutex */
706 use_connection( LDAP *ld, LDAPConn *lc )
708 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_conn_mutex );
710 lc->lconn_lastused = time( NULL );
714 /* protected by ld_conn_mutex */
716 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
718 LDAPConn *tmplc, *prevlc;
720 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_conn_mutex );
721 Debug( LDAP_DEBUG_TRACE,
722 "ldap_free_connection %d %d\n",
725 if ( force || --lc->lconn_refcnt <= 0 ) {
726 /* remove from connections list first */
728 for ( prevlc = NULL, tmplc = ld->ld_conns;
730 tmplc = tmplc->lconn_next )
733 if ( prevlc == NULL ) {
734 ld->ld_conns = tmplc->lconn_next;
736 prevlc->lconn_next = tmplc->lconn_next;
738 if ( ld->ld_defconn == lc ) {
739 ld->ld_defconn = NULL;
746 /* process connection callbacks */
748 struct ldapoptions *lo;
752 lo = &ld->ld_options;
753 LDAP_MUTEX_LOCK( &lo->ldo_mutex );
754 if ( lo->ldo_conn_cbs ) {
755 for ( ll=lo->ldo_conn_cbs; ll; ll=ll->ll_next ) {
757 cb->lc_del( ld, lc->lconn_sb, cb );
760 LDAP_MUTEX_UNLOCK( &lo->ldo_mutex );
761 lo = LDAP_INT_GLOBAL_OPT();
762 LDAP_MUTEX_LOCK( &lo->ldo_mutex );
763 if ( lo->ldo_conn_cbs ) {
764 for ( ll=lo->ldo_conn_cbs; ll; ll=ll->ll_next ) {
766 cb->lc_del( ld, lc->lconn_sb, cb );
769 LDAP_MUTEX_UNLOCK( &lo->ldo_mutex );
772 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
773 ldap_mark_select_clear( ld, lc->lconn_sb );
775 ldap_send_unbind( ld, lc->lconn_sb,
780 if ( lc->lconn_ber != NULL ) {
781 ber_free( lc->lconn_ber, 1 );
784 ldap_int_sasl_close( ld, lc );
786 ldap_int_gssapi_close( ld, lc );
789 ldap_free_urllist( lc->lconn_server );
791 /* FIXME: is this at all possible?
792 * ldap_ld_free() in unbind.c calls ldap_free_connection()
793 * with force == 1 __after__ explicitly calling
794 * ldap_free_request() on all requests */
798 for ( lr = ld->ld_requests; lr; ) {
799 LDAPRequest *lr_next = lr->lr_next;
801 if ( lr->lr_conn == lc ) {
802 ldap_free_request_int( ld, lr );
809 if ( lc->lconn_sb != ld->ld_sb ) {
810 ber_sockbuf_free( lc->lconn_sb );
812 ber_int_sb_close( lc->lconn_sb );
815 if ( lc->lconn_rebind_queue != NULL) {
817 for( i = 0; lc->lconn_rebind_queue[i] != NULL; i++ ) {
818 LDAP_VFREE( lc->lconn_rebind_queue[i] );
820 LDAP_FREE( lc->lconn_rebind_queue );
825 Debug( LDAP_DEBUG_TRACE,
826 "ldap_free_connection: actually freed\n",
830 lc->lconn_lastused = time( NULL );
831 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
832 lc->lconn_refcnt, 0, 0 );
837 /* Protects self with ld_conn_mutex */
840 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
845 Debug( LDAP_DEBUG_TRACE, "** ld %p Connection%s:\n", (void *)ld, all ? "s" : "", 0 );
846 LDAP_MUTEX_LOCK( &ld->ld_conn_mutex );
847 for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
848 if ( lc->lconn_server != NULL ) {
849 Debug( LDAP_DEBUG_TRACE, "* host: %s port: %d%s\n",
850 ( lc->lconn_server->lud_host == NULL ) ? "(null)"
851 : lc->lconn_server->lud_host,
852 lc->lconn_server->lud_port, ( lc->lconn_sb ==
853 ld->ld_sb ) ? " (default)" : "" );
855 Debug( LDAP_DEBUG_TRACE, " refcnt: %d status: %s\n", lc->lconn_refcnt,
856 ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET )
858 ( lc->lconn_status == LDAP_CONNST_CONNECTING )
859 ? "Connecting" : "Connected", 0 );
860 Debug( LDAP_DEBUG_TRACE, " last used: %s%s\n",
861 ldap_pvt_ctime( &lc->lconn_lastused, timebuf ),
862 lc->lconn_rebind_inprogress ? " rebind in progress" : "", 0 );
863 if ( lc->lconn_rebind_inprogress ) {
864 if ( lc->lconn_rebind_queue != NULL) {
867 for ( i = 0; lc->lconn_rebind_queue[i] != NULL; i++ ) {
869 for( j = 0; lc->lconn_rebind_queue[i][j] != 0; j++ ) {
870 Debug( LDAP_DEBUG_TRACE, " queue %d entry %d - %s\n",
871 i, j, lc->lconn_rebind_queue[i][j] );
875 Debug( LDAP_DEBUG_TRACE, " queue is empty\n", 0, 0, 0 );
878 Debug( LDAP_DEBUG_TRACE, "\n", 0, 0, 0 );
883 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
887 /* protected by req_mutex and res_mutex */
889 ldap_dump_requests_and_responses( LDAP *ld )
895 Debug( LDAP_DEBUG_TRACE, "** ld %p Outstanding Requests:\n",
897 lr = ld->ld_requests;
899 Debug( LDAP_DEBUG_TRACE, " Empty\n", 0, 0, 0 );
901 for ( i = 0; lr != NULL; lr = lr->lr_next, i++ ) {
902 Debug( LDAP_DEBUG_TRACE, " * msgid %d, origid %d, status %s\n",
903 lr->lr_msgid, lr->lr_origid,
904 ( lr->lr_status == LDAP_REQST_INPROGRESS ) ? "InProgress" :
905 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
906 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
907 ( lr->lr_status == LDAP_REQST_WRITING ) ? "Writing" :
908 ( lr->lr_status == LDAP_REQST_COMPLETED ) ? "RequestCompleted"
910 Debug( LDAP_DEBUG_TRACE, " outstanding referrals %d, parent count %d\n",
911 lr->lr_outrefcnt, lr->lr_parentcnt, 0 );
913 Debug( LDAP_DEBUG_TRACE, " ld %p request count %d (abandoned %lu)\n",
914 (void *)ld, i, ld->ld_nabandoned );
915 Debug( LDAP_DEBUG_TRACE, "** ld %p Response Queue:\n", (void *)ld, 0, 0 );
916 if ( ( lm = ld->ld_responses ) == NULL ) {
917 Debug( LDAP_DEBUG_TRACE, " Empty\n", 0, 0, 0 );
919 for ( i = 0; lm != NULL; lm = lm->lm_next, i++ ) {
920 Debug( LDAP_DEBUG_TRACE, " * msgid %d, type %lu\n",
921 lm->lm_msgid, (unsigned long)lm->lm_msgtype, 0 );
922 if ( lm->lm_chain != NULL ) {
923 Debug( LDAP_DEBUG_TRACE, " chained responses:\n", 0, 0, 0 );
924 for ( l = lm->lm_chain; l != NULL; l = l->lm_chain ) {
925 Debug( LDAP_DEBUG_TRACE,
926 " * msgid %d, type %lu\n",
928 (unsigned long)l->lm_msgtype, 0 );
932 Debug( LDAP_DEBUG_TRACE, " ld %p response count %d\n", (void *)ld, i, 0 );
934 #endif /* LDAP_DEBUG */
936 /* protected by req_mutex */
938 ldap_free_request_int( LDAP *ld, LDAPRequest *lr )
940 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_req_mutex );
941 /* if lr_refcnt > 0, the request has been looked up
942 * by ldap_find_request_by_msgid(); if in the meanwhile
943 * the request is free()'d by someone else, just decrease
944 * the reference count and extract it from the request
945 * list; later on, it will be freed. */
946 if ( lr->lr_prev == NULL ) {
947 if ( lr->lr_refcnt == 0 ) {
948 /* free'ing the first request? */
949 assert( ld->ld_requests == lr );
952 if ( ld->ld_requests == lr ) {
953 ld->ld_requests = lr->lr_next;
957 lr->lr_prev->lr_next = lr->lr_next;
960 if ( lr->lr_next != NULL ) {
961 lr->lr_next->lr_prev = lr->lr_prev;
964 if ( lr->lr_refcnt > 0 ) {
965 lr->lr_refcnt = -lr->lr_refcnt;
973 if ( lr->lr_ber != NULL ) {
974 ber_free( lr->lr_ber, 1 );
978 if ( lr->lr_res_error != NULL ) {
979 LDAP_FREE( lr->lr_res_error );
980 lr->lr_res_error = NULL;
983 if ( lr->lr_res_matched != NULL ) {
984 LDAP_FREE( lr->lr_res_matched );
985 lr->lr_res_matched = NULL;
991 /* protected by req_mutex */
993 ldap_free_request( LDAP *ld, LDAPRequest *lr )
995 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_req_mutex );
996 Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
997 lr->lr_origid, lr->lr_msgid, 0 );
999 /* free all referrals (child requests) */
1000 while ( lr->lr_child ) {
1001 ldap_free_request( ld, lr->lr_child );
1004 if ( lr->lr_parent != NULL ) {
1007 --lr->lr_parent->lr_outrefcnt;
1008 for ( lrp = &lr->lr_parent->lr_child;
1010 lrp = &(*lrp)->lr_refnext );
1013 *lrp = lr->lr_refnext;
1016 ldap_free_request_int( ld, lr );
1020 * call first time with *cntp = -1
1021 * when returns *cntp == -1, no referrals are left
1023 * NOTE: may replace *refsp, or shuffle the contents
1024 * of the original array.
1026 static int ldap_int_nextref(
1032 assert( refsp != NULL );
1033 assert( *refsp != NULL );
1034 assert( cntp != NULL );
1043 if ( (*refsp)[ *cntp ] == NULL ) {
1051 * Chase v3 referrals
1054 * (IN) ld = LDAP connection handle
1055 * (IN) lr = LDAP Request structure
1056 * (IN) refs = array of pointers to referral strings that we will chase
1057 * The array will be free'd by this function when no longer needed
1058 * (IN) sref != 0 if following search reference
1059 * (OUT) errstrp = Place to return a string of referrals which could not be followed
1060 * (OUT) hadrefp = 1 if sucessfully followed referral
1062 * Return value - number of referrals followed
1064 * Protected by res_mutex, conn_mutex and req_mutex (try_read1msg)
1067 ldap_chase_v3referrals( LDAP *ld, LDAPRequest *lr, char **refs, int sref, char **errstrp, int *hadrefp )
1070 int unfollowedcnt = 0;
1071 LDAPRequest *origreq;
1072 LDAPURLDesc *srv = NULL;
1074 char **refarray = NULL;
1076 int rc, count, i, j, id;
1078 LDAP_NEXTREF_PROC *nextref_proc = ld->ld_nextref_proc ? ld->ld_nextref_proc : ldap_int_nextref;
1080 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1081 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_conn_mutex );
1082 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_req_mutex );
1083 Debug( LDAP_DEBUG_TRACE, "ldap_chase_v3referrals\n", 0, 0, 0 );
1085 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
1091 /* If no referrals in array, return */
1092 if ( (refs == NULL) || ( (refs)[0] == NULL) ) {
1097 /* Check for hop limit exceeded */
1098 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
1099 Debug( LDAP_DEBUG_ANY,
1100 "more than %d referral hops (dropping)\n", ld->ld_refhoplimit, 0, 0 );
1101 ld->ld_errno = LDAP_REFERRAL_LIMIT_EXCEEDED;
1106 /* find original request */
1108 origreq->lr_parent != NULL;
1109 origreq = origreq->lr_parent )
1117 /* parse out & follow referrals */
1118 /* NOTE: if nextref_proc == ldap_int_nextref, params is ignored */
1120 for ( nextref_proc( ld, &refarray, &i, ld->ld_nextref_params );
1122 nextref_proc( ld, &refarray, &i, ld->ld_nextref_params ) )
1125 /* Parse the referral URL */
1126 rc = ldap_url_parse_ext( refarray[i], &srv, LDAP_PVT_URL_PARSE_NOEMPTY_DN );
1127 if ( rc != LDAP_URL_SUCCESS ) {
1128 /* ldap_url_parse_ext() returns LDAP_URL_* errors
1129 * which do not map on API errors */
1130 ld->ld_errno = LDAP_PARAM_ERROR;
1135 if( srv->lud_crit_exts ) {
1138 /* If StartTLS is the only critical ext, OK. */
1139 if ( find_tls_ext( srv ) == 2 && srv->lud_crit_exts == 1 )
1143 /* we do not support any other extensions */
1144 ld->ld_errno = LDAP_NOT_SUPPORTED;
1150 /* check connection for re-bind in progress */
1151 if (( lc = find_connection( ld, srv, 1 )) != NULL ) {
1152 /* See if we've already requested this DN with this conn */
1155 ber_len_t len = srv->lud_dn ? strlen( srv->lud_dn ) : 0;
1156 for ( lp = origreq; lp; ) {
1157 if ( lp->lr_conn == lc
1158 && len == lp->lr_dn.bv_len
1160 && strncmp( srv->lud_dn, lp->lr_dn.bv_val, len ) == 0 )
1165 if ( lp == origreq ) {
1168 lp = lp->lr_refnext;
1172 ldap_free_urllist( srv );
1174 ld->ld_errno = LDAP_CLIENT_LOOP;
1179 if ( lc->lconn_rebind_inprogress ) {
1180 /* We are already chasing a referral or search reference and a
1181 * bind on that connection is in progress. We must queue
1182 * referrals on that connection, so we don't get a request
1183 * going out before the bind operation completes. This happens
1184 * if two search references come in one behind the other
1185 * for the same server with different contexts.
1187 Debug( LDAP_DEBUG_TRACE,
1188 "ldap_chase_v3referrals: queue referral \"%s\"\n",
1190 if( lc->lconn_rebind_queue == NULL ) {
1191 /* Create a referral list */
1192 lc->lconn_rebind_queue =
1193 (char ***) LDAP_MALLOC( sizeof(void *) * 2);
1195 if( lc->lconn_rebind_queue == NULL) {
1196 ld->ld_errno = LDAP_NO_MEMORY;
1201 lc->lconn_rebind_queue[0] = refarray;
1202 lc->lconn_rebind_queue[1] = NULL;
1206 /* Count how many referral arrays we already have */
1207 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
1211 /* Add the new referral to the list */
1212 lc->lconn_rebind_queue = (char ***) LDAP_REALLOC(
1213 lc->lconn_rebind_queue, sizeof(void *) * (j + 2));
1215 if( lc->lconn_rebind_queue == NULL ) {
1216 ld->ld_errno = LDAP_NO_MEMORY;
1220 lc->lconn_rebind_queue[j] = refarray;
1221 lc->lconn_rebind_queue[j+1] = NULL;
1225 /* We have queued the referral/reference, now just return */
1228 count = 1; /* Pretend we already followed referral */
1232 /* Re-encode the request with the new starting point of the search.
1233 * Note: In the future we also need to replace the filter if one
1234 * was provided with the search reference
1237 /* For references we don't want old dn if new dn empty */
1238 if ( sref && srv->lud_dn == NULL ) {
1239 srv->lud_dn = LDAP_STRDUP( "" );
1242 LDAP_NEXT_MSGID( ld, id );
1243 ber = re_encode_request( ld, origreq->lr_ber, id,
1244 sref, srv, &rinfo.ri_request );
1247 ld->ld_errno = LDAP_ENCODING_ERROR;
1252 Debug( LDAP_DEBUG_TRACE,
1253 "ldap_chase_v3referral: msgid %d, url \"%s\"\n",
1254 lr->lr_msgid, refarray[i], 0);
1256 /* Send the new request to the server - may require a bind */
1257 rinfo.ri_msgid = origreq->lr_origid;
1258 rinfo.ri_url = refarray[i];
1259 rc = ldap_send_server_request( ld, ber, id,
1260 origreq, &srv, NULL, &rinfo, 0, 1 );
1262 /* Failure, try next referral in the list */
1263 Debug( LDAP_DEBUG_ANY, "Unable to chase referral \"%s\" (%d: %s)\n",
1264 refarray[i], ld->ld_errno, ldap_err2string( ld->ld_errno ) );
1265 unfollowedcnt += ldap_append_referral( ld, &unfollowed, refarray[i] );
1266 ldap_free_urllist( srv );
1268 ld->ld_errno = LDAP_REFERRAL;
1270 /* Success, no need to try this referral list further */
1275 /* check if there is a queue of referrals that came in during bind */
1277 lc = find_connection( ld, srv, 1 );
1279 ld->ld_errno = LDAP_OPERATIONS_ERROR;
1281 LDAP_MUTEX_UNLOCK( &ld->ld_conn_mutex );
1286 if ( lc->lconn_rebind_queue != NULL ) {
1287 /* Release resources of previous list */
1288 LDAP_VFREE( refarray );
1290 ldap_free_urllist( srv );
1293 /* Pull entries off end of queue so list always null terminated */
1294 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++ )
1296 refarray = lc->lconn_rebind_queue[j - 1];
1297 lc->lconn_rebind_queue[j-1] = NULL;
1298 /* we pulled off last entry from queue, free queue */
1300 LDAP_FREE( lc->lconn_rebind_queue );
1301 lc->lconn_rebind_queue = NULL;
1303 /* restart the loop the with new referral list */
1307 break; /* referral followed, break out of for loop */
1309 } /* end for loop */
1311 LDAP_VFREE( refarray );
1312 ldap_free_urllist( srv );
1313 LDAP_FREE( *errstrp );
1317 LDAP_FREE( unfollowed );
1320 *errstrp = unfollowed;
1326 * XXX merging of errors in this routine needs to be improved
1327 * Protected by res_mutex, conn_mutex and req_mutex (try_read1msg)
1330 ldap_chase_referrals( LDAP *ld,
1338 char *p, *ref, *unfollowed;
1339 LDAPRequest *origreq;
1345 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1346 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_conn_mutex );
1347 LDAP_ASSERT_MUTEX_OWNER( &ld->ld_req_mutex );
1348 Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
1350 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
1353 if ( *errstrp == NULL ) {
1357 len = strlen( *errstrp );
1358 for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
1359 if ( strncasecmp( p, LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
1361 p += LDAP_REF_STR_LEN;
1366 if ( len < LDAP_REF_STR_LEN ) {
1370 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
1371 Debug( LDAP_DEBUG_ANY,
1372 "more than %d referral hops (dropping)\n",
1373 ld->ld_refhoplimit, 0, 0 );
1374 /* XXX report as error in ld->ld_errno? */
1378 /* find original request */
1379 for ( origreq = lr; origreq->lr_parent != NULL;
1380 origreq = origreq->lr_parent ) {
1387 /* parse out & follow referrals */
1388 for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
1389 p = strchr( ref, '\n' );
1394 rc = ldap_url_parse_ext( ref, &srv, LDAP_PVT_URL_PARSE_NOEMPTY_DN );
1395 if ( rc != LDAP_URL_SUCCESS ) {
1396 Debug( LDAP_DEBUG_TRACE,
1397 "ignoring %s referral <%s>\n",
1398 ref, rc == LDAP_URL_ERR_BADSCHEME ? "unknown" : "incorrect", 0 );
1399 rc = ldap_append_referral( ld, &unfollowed, ref );
1404 Debug( LDAP_DEBUG_TRACE,
1405 "chasing LDAP referral: <%s>\n", ref, 0, 0 );
1409 /* See if we've already been here */
1410 if (( lc = find_connection( ld, srv, 1 )) != NULL ) {
1413 ber_len_t len = srv->lud_dn ? strlen( srv->lud_dn ) : 0;
1414 for ( lp = lr; lp; lp = lp->lr_parent ) {
1415 if ( lp->lr_conn == lc
1416 && len == lp->lr_dn.bv_len )
1418 if ( len && strncmp( srv->lud_dn, lp->lr_dn.bv_val, len ) )
1425 ldap_free_urllist( srv );
1426 ld->ld_errno = LDAP_CLIENT_LOOP;
1432 LDAP_NEXT_MSGID( ld, id );
1433 ber = re_encode_request( ld, origreq->lr_ber,
1434 id, sref, srv, &rinfo.ri_request );
1436 if ( ber == NULL ) {
1440 /* copy the complete referral for rebind process */
1441 rinfo.ri_url = LDAP_STRDUP( ref );
1443 rinfo.ri_msgid = origreq->lr_origid;
1445 rc = ldap_send_server_request( ld, ber, id,
1446 lr, &srv, NULL, &rinfo, 0, 1 );
1447 LDAP_FREE( rinfo.ri_url );
1452 Debug( LDAP_DEBUG_ANY,
1453 "Unable to chase referral \"%s\" (%d: %s)\n",
1454 ref, ld->ld_errno, ldap_err2string( ld->ld_errno ) );
1455 rc = ldap_append_referral( ld, &unfollowed, ref );
1458 ldap_free_urllist(srv);
1461 LDAP_FREE( *errstrp );
1462 *errstrp = unfollowed;
1464 return(( rc == 0 ) ? count : rc );
1469 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
1473 if ( *referralsp == NULL ) {
1475 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
1479 *referralsp = (char *)LDAP_REALLOC( *referralsp,
1480 strlen( *referralsp ) + strlen( s ) + 2 );
1483 if ( *referralsp == NULL ) {
1484 ld->ld_errno = LDAP_NO_MEMORY;
1489 strcpy( *referralsp, LDAP_REF_STR );
1491 strcat( *referralsp, "\n" );
1493 strcat( *referralsp, s );
1501 re_encode_request( LDAP *ld,
1502 BerElement *origber,
1509 * XXX this routine knows way too much about how the lber library works!
1517 BerElement tmpber, *ber;
1520 Debug( LDAP_DEBUG_TRACE,
1521 "re_encode_request: new msgid %ld, new dn <%s>\n",
1523 ( srv == NULL || srv->lud_dn == NULL) ? "NONE" : srv->lud_dn, 0 );
1528 * all LDAP requests are sequences that start with a message id.
1529 * For all except delete, this is followed by a sequence that is
1530 * tagged with the operation code. For delete, the provided DN
1531 * is not wrapped by a sequence.
1533 rtag = ber_scanf( &tmpber, "{it", /*}*/ &along, &tag );
1535 if ( rtag == LBER_ERROR ) {
1536 ld->ld_errno = LDAP_DECODING_ERROR;
1541 if ( tag == LDAP_REQ_BIND ) {
1542 /* bind requests have a version number before the DN & other stuff */
1543 rtag = ber_scanf( &tmpber, "{im" /*}*/, &ver, &dn );
1545 } else if ( tag == LDAP_REQ_DELETE ) {
1546 /* delete requests don't have a DN wrapping sequence */
1547 rtag = ber_scanf( &tmpber, "m", &dn );
1549 } else if ( tag == LDAP_REQ_SEARCH ) {
1550 /* search requests need to be re-scope-ed */
1551 rtag = ber_scanf( &tmpber, "{me" /*"}"*/, &dn, &scope );
1553 if( srv->lud_scope != LDAP_SCOPE_DEFAULT ) {
1554 /* use the scope provided in reference */
1555 scope = srv->lud_scope;
1557 } else if ( sref ) {
1558 /* use scope implied by previous operation
1561 * subtree -> subtree
1562 * subordinate -> subtree
1566 case LDAP_SCOPE_BASE:
1567 case LDAP_SCOPE_ONELEVEL:
1568 scope = LDAP_SCOPE_BASE;
1570 case LDAP_SCOPE_SUBTREE:
1571 case LDAP_SCOPE_SUBORDINATE:
1572 scope = LDAP_SCOPE_SUBTREE;
1578 rtag = ber_scanf( &tmpber, "{m" /*}*/, &dn );
1581 if( rtag == LBER_ERROR ) {
1582 ld->ld_errno = LDAP_DECODING_ERROR;
1586 /* restore character zero'd out by ber_scanf*/
1587 dn.bv_val[dn.bv_len] = tmpber.ber_tag;
1589 if (( ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
1593 if ( srv->lud_dn ) {
1594 ber_str2bv( srv->lud_dn, 0, 0, &dn );
1597 if ( tag == LDAP_REQ_BIND ) {
1598 rc = ber_printf( ber, "{it{iO" /*}}*/, msgid, tag, ver, &dn );
1599 } else if ( tag == LDAP_REQ_DELETE ) {
1600 rc = ber_printf( ber, "{itON}", msgid, tag, &dn );
1601 } else if ( tag == LDAP_REQ_SEARCH ) {
1602 rc = ber_printf( ber, "{it{Oe" /*}}*/, msgid, tag, &dn, scope );
1604 rc = ber_printf( ber, "{it{O" /*}}*/, msgid, tag, &dn );
1608 ld->ld_errno = LDAP_ENCODING_ERROR;
1613 if ( tag != LDAP_REQ_DELETE && (
1614 ber_write(ber, tmpber.ber_ptr, ( tmpber.ber_end - tmpber.ber_ptr ), 0)
1615 != ( tmpber.ber_end - tmpber.ber_ptr ) ||
1616 ber_printf( ber, /*{{*/ "N}N}" ) == -1 ) )
1618 ld->ld_errno = LDAP_ENCODING_ERROR;
1624 if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
1625 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
1627 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
1629 #endif /* LDAP_DEBUG */
1631 *type = tag; /* return request type */
1636 /* protected by req_mutex */
1638 ldap_find_request_by_msgid( LDAP *ld, ber_int_t msgid )
1642 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
1643 if ( lr->lr_status == LDAP_REQST_COMPLETED ) {
1644 continue; /* Skip completed requests */
1646 if ( msgid == lr->lr_msgid ) {
1655 /* protected by req_mutex */
1657 ldap_return_request( LDAP *ld, LDAPRequest *lrx, int freeit )
1661 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
1663 if ( lr->lr_refcnt > 0 ) {
1666 } else if ( lr->lr_refcnt < 0 ) {
1668 if ( lr->lr_refcnt == 0 ) {
1676 ldap_free_request_int( ld, lrx );
1678 } else if ( freeit ) {
1679 ldap_free_request( ld, lrx );